DRV8886AT
- PWM microstepping stepper motor driver
- Up to 1/16 microstepping
- Non-circular and standard ½ step modes
- Integrated current sense functionality
- No sense resistors required
- ±6.25% Full-scale current accuracy
- Smart tune adaptive decay technology,
slow, and mixed decay options - 8 to 37-V Operating supply voltage range
- Low RDS(ON): 550 mΩ HS + LS at 24 V, 25°C
- High current capacity
- 3-A Peak per bridge
- 2-A Full-scale per bridge
- 1.4-A rms per bridge
- Dynamic and fixed off-time PWM current regulation
- Simple STEP/DIR interface
- Low-current sleep mode (20 µA)
- Small package and footprint
- 24 HTSSOP PowerPAD™ package
- 28 WQFN package
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (TSD)
- Fault condition indication pin (nFAULT)
The DRV8886AT is a stepper motor driver for industrial and consumer end equipment applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8886AT is capable of driving up to 2-A full scale or 1.4-A rms output current (24-V and TA = 25°C, dependent on PCB design).
The DRV8886AT uses an internal current sense architecture to eliminate the need for two external power sense resistors saving PCB area and system cost. The DRV8886AT uses an internal PWM current regulation scheme adjustable between smart tune adaptive decay technology, slow, and mixed decay options. Smart tune adaptive decay technology automatically adjusts for optimal current regulation performance and compensates for motor variation and aging effects.
A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in different step modes ranging from full-step to 1/16 microstepping. A low-power sleep mode is provided for very low standby quiescent standby current using a dedicated nSLEEP pin.
Device protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DRV8886AT 2-A Stepper Motor Driver With Integrated Current Sense and Smart Tune Technology datasheet (Rev. C) | PDF | HTML | 2020/3/11 | ||
| Application brief | Advantages of Integrated Current Sensing (Rev. B) | PDF | HTML | 2022/6/20 | |||
| 應用說明 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021/10/14 | |||
| 白皮書 | How smart tune regulates current in stepper motors (Rev. A) | 2019/3/19 | ||||
| Application brief | Smart Tuning for Efficient Stepper Driving | 2018/11/20 | ||||
| 技術文章 | Getting smart about tuning your stepper motor | PDF | HTML | 2018/8/23 | |||
| 應用說明 | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018/7/6 | ||||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 2004/5/12 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
DRV8886ATEVM — 具有整合感測電阻的 DRV8886AT 2.0A 步進馬達驅動器評估模組
SLVC682 — DRV8886ATEVM Firmware and GUI
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RHR) | 28 | Ultra Librarian |
| HTSSOP (PWP) | 24 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。